I just watched a few videos on YouTube about hand pollinating tomato flowers using a C128 tuning fork, which emulates an actual bee. Tests have been done comparing methods of hand pollination by shaking, flicking, electric toothbrush, and the use of a Particular tuning fork (C128),
It appears that the use of this tuning fork is superior to other methods, and they are inexpensive on Ebay ($5.80)
Here's a couple of videos:
https://www.youtube.com/watch?v=JpUN4Bxmd0w
https://www.youtube.com/watch?v=FfRvQ9UU8Z0
Has anyone on here tried them?